fix mono build

MediaBrowser.Model/Logging/ILogger.cs

@@ -66,5 +66,13 @@ namespace MediaBrowser.Model.Logging
         /// <param name="severity">The severity.</param>
         /// <param name="additionalContent">Content of the additional.</param>
         void LogMultiline(string message, LogSeverity severity, StringBuilder additionalContent);
+
+        /// <summary>
+        /// Logs the specified severity.
+        /// </summary>
+        /// <param name="severity">The severity.</param>
+        /// <param name="message">The message.</param>
+        /// <param name="paramList">The parameter list.</param>
+        void Log(LogSeverity severity, string message, params object[] paramList);
     }
 }